This is a voltmeter that I like to use. 3 usd news for me is a lot of work. His version I have at home in red blue and green color.Voltmeter liked and Electronics engineers from my friends.In this article I’ll tell you why?
You can use the measuring device to measure car batteries as well as other batteries, e.g. for e-bikes, various DC regulators and sources.It can work by being powered from a source that also measures.It can work by being powered from a source that also measures here, the range is 4.5V-30V.
If you need to measure 0-100V, you need an additional power supply , more below for the voltmeter wiring diagram.
Voltmeter is to get three color blue, red, green.LED lighting is sufficient, the most beautiful are blue and red, lately green is so weak yellow.Currently, in the last year, versions appeared that do not have a calibration trimmer with which you could set the accuracy of the voltmeter.Also, the wires are soldered on and can come off, older versions had a connector, it was better.
The voltmeter has a frame that you can place in the panel, the back side is exposed you can see the PCB, the voltmeter is not waterproof, if you need a waterproof voltmeter click on the link below:
Voltmeter is very accurate, the accuracy is + – 0.1V
Has a long lifetime (I sold them 100 + and only one broke down)
Voltmeter can be placed into the panel has handles.
Shows one place after the decimal, which is a condition accurate measurement ..
Some voltmeters can calibrate voltmeters all look the same, but the PCB is different anyway, all PCB accurate +-0.1V
Voltmeter can working in two modes
The first mode is Self powered
Voltmeter can be powered from the same source and the source of the measured
Voltmeter range in self-powered mode is 4.5V – 30V
The second mode is with external power
External power supply with selectable voltages from 4.5V to 30V . External power supply is connected to the red and black wires .
The measuring range is 0 – 100V . Yellow or white wire conect to board with plus for measured source 0-100V (0-99V).
Other technical information about 0-100V Digital Voltmeter
- Dimensions: 48mmx29mmx2.2mm (L x W x H)
- Power suply 4.5V-30V
- Wide measurement range 0-100V
- Red Blue or Green LED display
- Low power consumption
I have good experiences with ebay sellers and Tinydeal or Buyincoins chinese eshops.Price for voltmeter is about 2-3usd include shipping (free shipping)
Voltmeter can use to mesauring voltage on car battery (selfpowering mode) Electric bike , battery arays (0-100V), Photovoltaic panel and other DC voltage devices with voltage 0-100V.